Weightlifting bar



FIG. 1 is a top plan view of a weightlifting bar showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a right end elevational view thereof, the end opposite being a mirror image; and,

FIG. 4 is a front elevational view thereof. 

The ornamental design for a weightlifting bar, as shown and described. 